SAN ANTONIO DE LOS BAÑOS, Cuba--Director Francis Ford Coppola was reflecting on his brush with Fidel Castro, the blandishments to make another gangster film, and the pressure of borrowing at 29 percent interest to shoot "Apocalypse Now". But first he needed to cook pasta for 150 film students. Coppola, the multiple Oscar winner and maker of the "Godfather" films, was in Cuba as a guest...